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    There is no audible sound in the vacuum of space. What is the furthest point above the Earth's surface at which can sound be heard before this vacuum makes any sounds inaudible?

    Question #124358. Asked by kyleisalive. (Dec 04 11 4:08 PM)


    wdstk

    		"The Kármán line lies at an altitude of 100 kilometres (62 mi) above the Earth's sea level, and is commonly used to define the boundary between the Earth's atmosphere and outer space."

    http://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_line

    Dec 04 11, 7:15 PM
    sportsherald

    		Interesting question, but clearly academic, since one would not be able to survive in those conditions without a protective suit or craft. I imagine one could mount an external microphone to listen. The Astronomy Cafe website discusses limited sound transmission in the Moon's thin atmosphere! http://www.astronomycafe.net/qadir/q961.html


    Dec 07 11, 1:33 AM

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